How to Compare Solar Companies in Washington, DC

The short answer

In Washington, DC in 2026, a solar company is worth considering when it gives you a transparent gross price per watt, a DC-grounded production model, clear ownership of SRECs, and a written workmanship-and-roof warranty that matches DC’s 25-year panel life. Expect fair pricing around $3.00–$3.40 per watt installed for rooftop residential systems and SRECs trading about $360–$400 per MWh.

What changes the answer: your roof layout and shade, whether you want to own or sign a PPA, and whether you qualify for DOEE income-based programs. Pepco net metering and DC SRECs still carry the economics. See DC incentives in 2026 ↗.

How to read DC solar quotes in 2026

Use these checkpoints before you compare brands.

• Gross price per watt: Insist on a pre-incentive number. DC’s fair range is roughly $3.00–$3.40/W installed for typical rowhouse roofs in 2026. Source: Cost of Solar Per Watt in DC 2026 ↗.
• Production model: Look for a DC weather file (e.g., NSRDB/Typical Meteorological Year for DCA) and a shade study. DC homes typically produce about 1,100–1,200 kWh per kW per year depending on shade and tilt.
• SRECs: One SREC per 1,000 kWh. Market range in 2026 is about $360–$400 per MWh. Confirm who owns them and who registers your system in PJM GATS. Sources: DC incentives 2026 ↗, fair price guide ↗.
• Net metering: Pepco credits excess at the retail rate. That lowers your bill, separate from SREC income. See the DOEE overview and the DC incentives guide ↗.
• Federal credit: The 25D residential solar tax credit for purchases is gone in 2026. A $0 line item is correct for new purchases. Do not accept a quote that counts 30% for payback math. Source: DC incentives 2026 ↗.
• Financing: If you own (cash or loan), you typically keep SRECs. PPAs usually transfer SRECs to the provider. Read the assignment clause. Source: Solar financing options in DC 2026 ↗.

Warranties that matter in DC

Three layers, each doing different work:

• Equipment warranties: Panels commonly carry 12–25 years product and 25 years performance. Inverters 10–25 years depending on model. Read exclusions for flat-roof heat exposure common on DC rowhouses.
• Workmanship/labor: You want at least 10 years. This is what pays for troubleshooting and reinstalling if a roof penetration leaks or a conduit run fails.
• Roof warranty coordination: If your roof is under warranty, get written sign-off that solar attachments do not void it. If you plan to re-roof within five years, sequence it first or ensure detach-and-reset terms are in writing.

Ask for: a single-page warranty summary listing terms, years, and the paying party. If the installer offers a production guarantee, require the DC weather file name, baseline kWh by year, and the remedy mechanics.

What a fair DC quote looks like (worked example)

This is hypothetical and uses 2026 market figures for a Ward 5 rowhouse with minimal shade.

• System size: 8 kW
• Gross price: $3.20/W → $25,600 pre-incentive (within the $3.00–$3.40/W range)
• Modeled production: 1,150 kWh/kW-year → about 9,200 kWh/year
• Pepco net metering: credits at retail rate; bill impact depends on your rate and usage
• SRECs: 9.2 MWh × $360–$400/MWh → $3,312–$3,680 per year (market-based, not guaranteed)

Those numbers align with current DC conditions. Sources: DC incentives 2026 ↗, fair price guide ↗.

How to stack incentives if you qualify

• DOEE Solar for All: Free solar for income-qualified households. Confirm current eligibility and application availability directly with DOEE Solar for All ↗.
• Solar Advantage Plus Program (SAPP): Up to $10,000 rebates for income-qualified homeowners to reduce upfront costs. Check current status with DOEE and DCSEU. Program availability varies by fiscal year.
• Property tax: The added value from solar is exempt from DC property tax assessments. See DOEE and DC Code references via Energy.gov ↗ or DSIRE ↗ for statutory details.

For a summary of these programs, see DC solar incentives in 2026 ↗.

Comparing installers without the noise

• Require a DC address and installer license. Local crews know Pepco interconnection, historic district reviews, and alley access realities.
• Ask who performs the install. Subcontracting is normal, but you should know who is on your roof.
• If an installer cites NABCEP credentials ↗, verify their current status and ask whether the named person will oversee your project.
• Monitoring access in your name. You should see live data and have admin rights.
• Timeline and permit steps. In DC, interconnection, DCRA permits, and any HPRB review should be in the schedule.
• SREC registration. Confirm who registers in PJM GATS and how soon after PTO.

Evidence and practical implications

• Price reality: $3.00–$3.40/W sets a fair band for 2026 DC residential quotes. Source: Cost of Solar Per Watt in DC 2026 ↗.
• Ownership vs PPA: If you want SREC income, choose ownership. PPAs usually assign SRECs to the provider and exchange them for a lower kWh rate. Source: Financing options 2026 ↗.

Practical next steps:

• Normalize quotes to the same system size and gross $/W.
• Compare modeled kWh using the same DC weather file and shade assumptions.
• Decide early whether you want to own the SRECs.

FAQs

Which solar company should I choose in Washington, DC?

There is no official ranking that fits every home. A DC solar company should show a gross $/W around $3.00–$3.40, cite a DC weather file in the production model, explain SREC ownership for your contract, and provide a written workmanship warranty alongside manufacturer coverage. Compare on those specifics rather than brand lists. Sources: fair price guide ↗, DC incentives 2026 ↗.

Should I choose ownership or a PPA?

Ownership through cash or a loan typically lets you keep the SRECs, while a PPA often assigns them to the provider in exchange for a lower electricity rate. Compare the contract’s SREC assignment, escalator, buyout, and end-of-term terms before deciding. Source: Solar financing options in DC 2026 ↗.

How much would solar panels cost for a 2000 sq ft home?

Square footage is not a good estimator. Use kWh consumption and roof area. As a ballpark, many DC systems fall in the 6–10 kW range. At $3.00–$3.40/W, a 6 kW system would be about $18,000–$20,400 pre-incentive, and a 10 kW system about $30,000–$34,000. Actual size depends on your annual kWh and roof. Sources: fair price guide ↗.

Community notes

• On r/washingtondc, homeowners often ask if a west-facing rowhouse roof is disqualifying. It is not. Expect lower kWh than south, but DC’s SRECs and net metering still help if shading is modest.
• Another common pain point is PPAs that look cheap but shift SRECs away from the homeowner. Read the SREC assignment and escalator.
• Alley access and flat EPDM roofs come up often. Confirm attachment method, ballast calculations if used, and roof warranty coordination.

Relevant next step

If you want a DC-specific comparison with real roof constraints, run a quick sizing and cash flow pass with our solar calculator. When you are ready for a site-specific design and SREC plan, start a Green Zone assessment at /greenzone.